I don't think I can agree with what you said. Gambling invokes some strategies regardless of the type of the gambling you are involved into just that you will have to make alot of sacrifices to understand the algorithm and pattern of the games, you will at some point get the scope but it involves risk that will take some of your money.
A gambler will always try to devise ways to win at gambling, but no gambler has been able to develop a long-term strategy that guarantees winning all of the time. Even if a gambler wins and then tries to rely on his winning strategy, he will lose more than he wins.
If there is no strategy to win games on gambling, any casino that behaves in that manner will lose customers because people will lose more and when there is often more loss than winning games, people will leave and the casino will become a ghost town.
The casino does not provide winning strategies. The gambler seeks ways to win and beat the bookmakers. It is even normal for a gambler to lose more than he wins and every gambler is aware of this, and so no gambler leaves because he did not win; instead, gamblers consider bonuses and rewards when deciding which bookie to follow